package com.huangliusong.code;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.util.Random;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Component;
import org.springframework.web.bind.ServletRequestUtils;

import com.huangliusong.security.core.validate.code.ImageCode;
import com.huangliusong.security.core.validate.code.ValidateCodeGenerator;

//@Component("imageCodeGenerator")
public class HuangliusongImageCodeGenerator implements ValidateCodeGenerator {
	/**
	 * 用户可以在这里自定义验证码的生成器
	 */
	@Override
	public ImageCode generate(HttpServletRequest request) {

		int width = ServletRequestUtils.getIntParameter(request, "width", 60);
		int height = ServletRequestUtils.getIntParameter(request, "height", 60);
		BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
		Graphics g = image.getGraphics();
		Random random = new Random();
		System.out.println("黄##############################柳松自定义验证码生成器作用");
		g.setColor(getRandColor(200, 250));
		g.fillRect(0, 0, width, height);
		g.setFont(new Font("Times New Roman", Font.ITALIC, 20));
		g.setColor(getRandColor(60, 100));
		for (int i = 0; i < 155; i++) {
			int x = random.nextInt(width);
			int y = random.nextInt(height);
			int xl = random.nextInt(12);
			int yl = random.nextInt(12);
			g.drawLine(x, y, x + xl, y + yl);
		}

		String sRand = "";
		for (int i = 0; i < 3; i++) {
			String rand = String.valueOf(random.nextInt(10));
			sRand += rand;
			g.setColor(new Color(20 + random.nextInt(110), 20 + random.nextInt(110), 20 + random.nextInt(110)));
			g.drawString(rand, 13 * i + 6, 16);
		}
		g.dispose();
		// 过期时间（第三个参数）
		return new ImageCode(image, sRand, 20);
	}

	private Color getRandColor(int fc, int bc) {
		Random random = new Random();
		if (fc > 255) {
			fc = 255;
		}
		if (bc > 255) {
			bc = 255;
		}
		int r = fc + random.nextInt(bc - fc);
		int g = fc + random.nextInt(bc - fc);
		int b = fc + random.nextInt(bc - fc);
		return new Color(r, g, b);
	}

}
